WO1995024530A1

WO1995024530A1 - Suction device, in particular for a wet materials removal device

Info

Publication number: WO1995024530A1
Application number: PCT/EP1995/000471
Authority: WO
Inventors: Heinz Liebmann
Original assignee: Martin Beilhack Maschinenbau Gmbh
Priority date: 1994-03-09
Filing date: 1995-02-09
Publication date: 1995-09-14
Also published as: DE4407959C2; DE4407959A1

Abstract

A suction device, in particular for a wet materials removal device for sucking off fluid media such as defrosting agents from a roadway or runway, has a suction carriage (1, 1') with a suction head for taking up the liquid medium from the soil surface (41). The suction carriage (1, 1') has at least one suction element (27) that may be rotated around a vertical axis of rotation (35) and/or linearly moved in relation to the suction carriage (1). Suction openings (31) are provided at the lower side of the suction element (27). The device may be connected by a connection (11) to a conveyor (3) fitted with a pump.

Description

Suction device, in particular for a wet goods disposal device

The invention relates to a suction device, in particular for a wet goods disposal device for suctioning flowable media such as deicing agents from a runway or taxiway.

In particular, there should be as little wetness as possible on the open-air site and airport taxiways. On the other hand, however, it is necessary and necessary, especially on winter days, that the aircraft are treated with deicing agents, usually liquid deicing agents, before takeoff.

At large airports, special de-icing systems are provided for this purpose, with the aircraft driving past or being pulled past them. The draining liquids, including the deicing agents used, can be collected in drainage channels etc. in stationary deicing systems of this type. However, such large-sized stationary deicing devices are not used in small and medium-sized airports. De-icing vehicles are used here, the aircraft being completely sprayed and de-iced with appropriate spraying devices.

This is where the particular problem arises that no special devices are provided for collecting the liquids and the deicing agent.

This is not only a problem because of the large amounts of liquid which are then located at the relevant points on the ground surface of the flight area, but also because the appropriate de-icing agents should be tried to avoid pollution of the soil and the environment at least to a large extent and, if possible, even reuse them through recycling.

The object of the present invention is therefore to create a suction device for liquid media, by means of which liquid media can be sucked up from a floor surface as effectively and comprehensively as possible.

The object is achieved according to the features specified in claim 1. Advantageous embodiments of the invention are given in the subclaims.

A completely new way is followed by the present invention.

While it was previously only possible, for example, to try to take up the liquid on the floor, at least partially, with conventional sweepers, a special suction unit is now being used for the first time. direction proposed, which can be connected, for example, to conventional suction or tank trucks provided with a pump device and a holding tank.

The suction device according to the invention is characterized in that a suction vehicle is provided which e.g. has a suction element rotating about a vertical axis, preferably in the form of a suction plate or at least one suction arm running essentially radially or with a radial component, on the underside of which one or more suction openings are provided. During the rotation of this suction element, a certain area is always covered and the liquid is sucked into this area. The relevant areas can then be suctioned off one after the other by moving the trolley.

A star-shaped suction device with at least two, e.g. three suction arms aligned with radial components are used. However, it is also possible to use a rotating suction plate, the underside of which is provided or arranged for the at least one or more suction openings with radial components.

The suctioned-off liquid can then be conveyed further via a suction connection piece, preferably in the region of the vertical axis of rotation, on a suction vehicle which is already provided and has a pump device and the tank mentioned.

In principle, however, it is also possible to use suction elements which, for example, are moved back and forth in a linear alternating movement or linear component over a certain floor area, or circulating like a conveyor belt, and during the forward movement at a short distance above the floor surface through the the suction openings provided on them soak up the liquid media.

The suction device according to the invention can be designed comparatively flat in the manner of a suction slide. This slide can be moved over its wheels. In a preferred embodiment, it can be moved in the manner of a trailer construction, for example by means of the suction collecting wagon mentioned. However, an embodiment is also possible in which the suction truck designed in the manner of a suction carriage is equipped with its own drive device and is therefore self-propelled. It can preferably be controlled and directed via a control line or via radio.

In principle, it would also be possible for such a suction device to be or to be attached to an independently drivable commercial vehicle, for example between its front and rear axles, but also in the front or rear or even in the side area.

The sledge-like suction trolley according to the invention is preferably constructed in such a way that the chassis or at least the suction element can be adjusted at different heights relative to the chassis. This allows an optimal distance between the rotating suction elements, i.e. the suction opening and the floor area.

To increase the efficiency, it can also be provided that, for example, several suction trolleys are combined into one unit.

It is provided in a preferred embodiment that, for example, three suction trolleys arranged transversely to the direction of travel are provided, the suction trolleys lying on the outside each being separated from their drive position can be pivoted into a raised transport position.

Further advantages, details and features of the invention result below from the exemplary embodiments illustrated with the aid of drawings. The individual show:

FIG. 1 shows a schematic side view of the suction device according to the invention with three suction trolleys arranged next to one another, the outer suction trolleys being shown in their raised transport position;

FIG. 2 shows a top view of the exemplary embodiment according to FIG. 1, but with the suction suction trays on the outside being pivoted into their lowered operating position;

FIG. 3 shows a rear view of the suction device, the left suction trolley being pivoted into its raised transport position and the right suction trolley being pivoted relative to the central suction trolley into its lowered operating position;

FIG. 4 shows an enlarged top view of the suction trolley according to the exemplary embodiment according to FIG. 2;

Figure 5 is a schematic bottom view of the rotating suction element;

FIG. 6: a schematic side view of a section of a suction vehicle with the one shown in FIG FIG. 5 shows a star-shaped suction element;

FIG. 7: a schematic side view of a modified exemplary embodiment with a self-propelled suction trolley; and

FIG. 8: a top view of the exemplary embodiment according to FIG. 7.

1 to 6 show a first exemplary embodiment of a suction device 1 which is attached to a conventional suction collecting trolley 3 in the manner of a trailer and can be connected via a corresponding line system.

The suction collection truck 3 is a conventional truck with a suction unit 5 installed thereon and a liquid and collecting container 7.

Via an overhead suction nozzle 9, the one designed as a tube or hose can be connected to an interface 11, for example using a flange

Suction line 13 of the sled-shaped suction trolley 3 are connected.

In the exemplary embodiment according to FIGS. 1 to 6, three suction trolleys 3 coupled to one another are provided.

Each suction trolley 1 comprises a chassis 15. Furthermore, each suction trolley 1 is provided with four wheels 21 (an embodiment with three wheels is also sufficient). The wheels 21 seated at the corner points of a rectangle on the outer suction trolleys 1 'can be freely pivoted about a vertical axis 22. As a result, the rollers can move forward and backward as they do when cornering. because they swivel freely and without hindrance, so that the wheel 21 in question follows the vertical axis 22.

In contrast, in the exemplary embodiment shown, the middle suction trolley has a front and rear axle 17, 19 on which the wheels 21 are mounted on the outside. The middle suction trolley 1 can be coupled to the rear of the suction collecting trolley 3 via a drawbar device 23. The wheels 21 located adjacent to the drawbar 23 are preferably steerable in accordance with the drawbar position, as in a conventional trailer.

As shown schematically in the illustration in FIG. 1, in this exemplary embodiment the chassis 15 can be adjusted in height by means of a height adjustment device 25. Deviating from the mechanical representation, the height can also be adjusted hydraulically, pneumatically and / or electrically.

A rotating suction element 27 is provided on the underside of the chassis 15, which is also referred to below as a suction cup. In the exemplary embodiment shown, the suction cup 27 consists of three suction arms 29 which are arranged in a star-shaped manner and offset at an angle of 120 ^* and which - as can be seen in particular from the illustration according to FIG. 5 - have a radial direction on the underside Suction opening 31 are provided. The suction opening 31 is slit-shaped in this embodiment. Behind in the respective suction arm 29 is a suction channel 33 with a much larger cross section than the suction opening 31, which leads to a collecting head 37 located in the area of the vertical axis of rotation 35.

A drive device is accommodated in this collecting head 37 or at least arranged in its area 39, which can be driven pneumatically, hydraulically and / or electrically. In the case of a hydraulic drive in particular, it is possible for a connection to the suction trolley 1 to be provided via a separate pressure line, so that a hydraulic motor provided on the suction trolley can be driven via a pump installed on the vehicle.

The principle of operation of the suction device explained in this way can be seen in principle from FIG. 6.

During use, the corresponding suction vehicle 1 is driven by the towing vehicle, i.e. In the exemplary embodiment shown, the suction collecting trolley 3 is moved accordingly, the suction disk 27 provided with the star-shaped suction arms 29 being rotated about its axis of rotation 35 via the drive device 39. A desired optimal distance between the underside of the suction opening 31 on the suction nozzle 27 and the bottom surface 41 is set by the height adjustment device 25 mentioned. Due to the high suction effect, according to the arrow representations 43 (FIG. 6), those on the bottom surface 41, i.e. When used at airports on the runway and taxiway, liquids are sucked up, including above all the deicing agents mentioned, this liquid medium then via the suction opening 31 and the subsequent suction channel 33 via the collecting head 37, the suction line 13, the connection point 11 and the suction nozzle 9 is pumped into the interior of the liquid and collecting container 7 of the suction trolley 1.

Since, as described, the suction trolley 1 is built comparatively flat, it can even be moved under the wings and under the fuselage even during the deicing of an aircraft. The operation of the suction trolley 1, that is to say the starting of the drive device, the height adjustment device etc., can take place, for example, via control lines from the suction collection trolley 3, which are not shown in the drawing, or by radio via an antenna 44, which is only shown schematically in FIG.

In order to further increase the suction area, it is provided in the exemplary embodiment according to FIGS. 1 to 4 that two further lateral suction carriages 1 'are provided laterally symmetrically to the middle suction carriage 1 and offset to the rear from the drawbar device 23. In principle, these are constructed in the same way as the explained central suction trolley 1 (with the exception of the different wheel suspension).

In FIGS. 2 and 4, these side suction carriages 1 'are pivoted down into their lowered operating position. They are each connected via a horizontal pivot axis, for example using a hinge-like articulation 45 on the side of the central suction trolley 1. A connecting line 47 leads from the relevant collecting head 37 of the side suction trolley 1 'to the collecting head 37 of the middle suction trolley 1, so that the extracted liquid medium can then be conveyed into the tank truck 3 via the common suction line 13.

As can also be seen, a pivoting device 49 is also provided, by means of which the suction trolley 1 ', which is seated laterally in each case, can be pivoted from its lowered operating position into its raised transport position. This lifting device 49 consists, for example, of a hydraulic cylinder, which is attached to the middle suction carriage 1 and at its opposite end to the outer suction carriage, which is laterally offset 1 ', ie usually attacks on the chassis 15. The construction is such that, by appropriately retracting the lifting cylinder 49 ', the suction vehicle 3, which is located on the outside in each case, as shown in FIG. 3, can practically be raised and pivoted into its almost vertical position.

Due to the hinge-like articulated connection along the horizontal pivot axis 45, all suction carriages 1 are firmly coupled to one another and can be moved together via the train vehicle.

Deviatingly, the lifting device 49 can also be electrical, mechanical and / or pneumatic.

In the exemplary embodiment according to FIGS. 7 and 8, a self-propelled suction trolley 1 is shown. This is circular in plan view. It is also provided with a protective ring 51 on its outer circumference, so as not to cause damage to the surroundings, in particular to the aircraft, in the event of collisions. The protective ring 51 has suitable damping properties for this purpose.

In this exemplary embodiment, the self-propelled suction car 1 can preferably be steered, moved and put into operation via control lines or remotely controlled. The suction line 13 which connects the tank / towing vehicle and the self-propelled suction car 1 preferably consists here of a suction hose 13 'which is always released or wound up in the winding direction by a hose reel 53 with at least slight tension in order to avoid a collision Establish connection during use with the suction tanker 1, which then usually does not have to be moved.

Deviating from the exemplary embodiments shown the above-mentioned height adjustment devices for adapting an optimal suction distance between the underside of the suction opening 31 of the suction element 27 and the bottom surface 41 take place in such a way that it is not the chassis 15 of a suction wagon 1, but at least its rotating suction element 27 that is lowered or raised relative to the chassis becomes.

So that the suction slide can adapt better to the floor conditions, an automatically adjustable height adjustment device can also be provided. For example, the suction elements 27, 29 could be supported on the floor by means of roller-shaped minimum spacers and kept at this preselected distance with respect to a spring preload or by their own weight. Finally, a higher lifting of the suction element or the suction elements is also possible if the explained suction device is to be moved from its place of use.

The dimension of the suction cup 27 can be, for example, dimensions from 2 m to 3 m. With a diameter of 2.5 m, for example, this results in a suction width of approximately 7.5 m in the exemplary embodiment according to FIGS. 1 to 4 with three connected suction trolleys 1 arranged next to one another. Nevertheless, the width in the transport position would be only about 3 m in the case of an outer suction trolley 1 'which is folded in or up laterally. The overall height in this embodiment could also be limited to approximately 3.5 m.

Claims

Expectations;

1. Suction device, in particular for a wet goods disposal device for extracting flowable media such as deicing agents from a road or taxiway, characterized by the following features - it is a suction vehicle (1, 1 ') with a suction head for receiving the liquid medium provided by a floor surface (41),

the suction carriage (1, 1 ') comprises at least one suction element (27) which can be driven or moved about a vertical axis of rotation (35) and / or in a translation direction relative to the suction carriage (1),

the suction element (27) is provided on its underside with at least one or more suction openings (31), which preferably run or are arranged in the direction of extension of the suction element (27),

- The at least one suction opening (31) on the underside of the suction element (27) is connected via suction lines (33, 13) to a connection point (11) to which a suction conveyor (3) can be connected.

2. Suction device according to claim 1, characterized gekennzeich¬ net that the suction element (27) in its relative Höhenla- height to the floor surface (41) is adjustable.

3. Suction device according to claim 1 or 2, characterized ge indicates that the chassis (15) of the suction trolley (1) is adjustable in height.

4. Suction device according to one of claims 1 to 3, da¬ characterized in that the suction element (27) relative to the chassis (15) of the suction trolley (1) is adjustable in height.

5. Suction device according to one of claims 1 to 4, da¬ characterized in that the height adjustment of the suction element (27) relative to the bottom surface (41) can be carried out mechanically, electrically, hydraulically and / or pneumatically.

6. Suction device according to one of claims 1 to 5, da¬ characterized in that the suction element (27) consists of at least one rotating suction plate.

7. Suction device according to one of claims 1 to 6, characterized in that the suction element (27) consists of at least one, preferably a plurality of circumferentially staggered suction arms (29) aligned with the rotational axis (35) with radial component .

8. Suction device according to one of claims 1 to 7, characterized in that in the region of the axis of rotation

(35) a collecting head (37) is provided on the associated chassis (15) of the suction trolley (1), via which the liquid medium sucked up by the suction element (27) can be conveyed further via a downstream suction line (13).

9. Suction device according to one of claims 1 to 8, characterized in that the suction carriage (1, 1 ') is designed in the manner of a trailer with a drawbar device (23).

10. Suction device according to one of claims 1 to 8, characterized in that the suction carriage (1) is self-propelled and for this purpose comprises a drive and steering device.

11. Suction device according to one of claims 1 to 9, characterized in that the suction trolley (1) is mounted on a self-propelled carrier vehicle which can be raised and lowered.

12. Suction device according to one of claims 1 to 11, characterized in that a plurality of suction trolleys (1, 1 ') are coupled to form a unit.

13. Suction device according to claim 12, characterized in that a suction trolley (1) serves as the carrier vehicle, on which at least one further offset suction trolley (1 ') can be pivoted between a raised transport position and a lowered operating position.

14. Suction device according to claim 12 or 13, characterized in that three mutually coupled Absaugwa¬ gene (1, 1 ') are provided, the middle Absaugwa¬ gene (1) serves as a carrier vehicle on which the two laterally offset outer suction car (1 ') can be adjusted between a raised transport position and a lowered operating position.

15. Suction device according to one of claims 11 to 14, characterized in that the at least one movable between an operating and a transport position

Suction trolley (1 ') with the other as carrier vehicle Ending suction trolley (1) is coupled via a horizontal pivot axis (45), via which the suction trolley (1 ') can be pivoted into a raised transport position.

16. Suction device according to claim 15, characterized gekenn¬ characterized in that a lifting and pivoting device (49) is provided, via which the at least one movable in transport position suction trolley (1 ') can be raised.

17. Suction device according to one of claims 14 to 16, characterized in that the horizontal pivoting axis (45) extends in the longitudinal direction of the suction carriage serving as the carrier vehicle (3), preferably in the longitudinal direction of the drawbar.

18. Suction device according to one of claims 14 to 17, characterized in that the suction trolley movable in the transport position (1 ') are aligned in the transport position substantially vertically <+ 45 °, preferably <+ 30 °.

19. Suction device according to one of claims 11 to 18, characterized in that the lifting device (49) works mechanically, hydraulically, pneumatically and / or electrically.

20. Suction device according to one of claims 1 to 19, characterized in that the suction carriage (1, 1 ') are provided on their outer circumference at least in a partial circumferential area with a damping and protective device.